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John Carlson — — source: Informix-list mailing list archive (1991-1998)
Scott Kolaya wrote:
>
> It doesn't sound like update stats, caused the overflow. It sounds like it
> stopped it from happening. If the stats weren't updated the database
> wouldn't use the indexes and would scan the table. This is especially bad
> on a join with repeatable read isolation. The database might choose a hash
> join in memory and lock all the rows in both tables.
>
> Scott Kolaya
> DBA Fleet Services
>
That makes more sense. Thanks for the explanation.
John Carlson
Informix DBA
WH Smith, Inc.
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